/*!	 valuenode_const.h
**	 Header file for implementation of the "Constant" valuenode conversion.
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_VALUENODE_CONST_H
#define __SYNFIG_VALUENODE_CONST_H

#include <synfig/valuenode.h>

namespace synfig
{

class ValueNode_Const : public ValueNode
{
public:
    typedef etl::handle<ValueNode_Const> Handle;
    typedef etl::handle<const ValueNode_Const> ConstHandle;

private:
    ValueBase value;

    ValueNode_Const();
    ValueNode_Const(const ValueBase &x, etl::loose_handle<Canvas> canvas = 0);

public:

    virtual ValueBase operator()(Time t)const;
    virtual ~ValueNode_Const();

    const ValueBase &get_value()const;
    ValueBase &get_value();
    void set_value(const ValueBase &data);

    bool get_static()const
    {
        return get_value().get_static();
    }
    void set_static(bool x)
    {
        get_value().set_static(x);
    }
    virtual Interpolation get_interpolation()const
    {
        return get_value().get_interpolation();
    }
    virtual void set_interpolation(Interpolation x)
    {
        get_value().set_interpolation(x);
    }
    virtual String get_name()const;
    virtual String get_local_name()const;

    virtual ValueNode::Handle clone(etl::loose_handle<Canvas> canvas, const GUID& deriv_guid = GUID())const;
#ifdef _DEBUG
    String get_string()const;
#endif	// _DEBUG
public:
    // create a new ValueNode_Const object with the given value.
    // Unless the given value is a Bone, in which case make a ValueNode_Bone.
    static ValueNode* create(const ValueBase &x = ValueBase(), etl::loose_handle<Canvas> canvas = 0);

protected:
    virtual void get_times_vfunc(Node::time_set &set) const;
    virtual void get_values_vfunc(std::map<Time, ValueBase> &x) const;
};

}; // END of namespace synfig

#endif